In the page/handler that fetches data that you want to be fresh all the time

you need to show some code then, i cant guess in the dark

uhm. so what is the page where you want the data to be fresh?

revalidate = 0 not false

check this for the difference https://nextjs.org/docs/app/api-reference/file-conventions/route-segment-config#revalidate

they are basically opposite of each other

also, about this part, don't do this

firstly, revalidate = 0 there has zero effect

thirdly, don't import the css there and everywhere

yes